ZIP Codes of Knox County, MO

Population & People
Population & People
Total Population
3,793
Household Income
Household Income
Median Income
$62,931
Housing
Housing
Total Housing Units
1,903
Business & Economy
Business & Economy
Total Businesses
89
Employment
Employment
Employment Rate
60.20%
Education
Education
Bachelor's Degree+
15.58%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 6 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:6 ZIP Codes (6 Standard, 0 PO Box, 0 Unique) [See All]
Area Code:660
Timezone:Central (GMT -06:00)
Local Time:2:12:43 PM
Population:3,793 [See All]
FIPS:29103
Land Area:497 sq mi
Water Area:3 sq mi
Coordinates:40.1258, -92.1669
Quick Link:
https://www.zip-codes.com/county/mo-knox.asp
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Missouri's #112 most populous county
3,793 residents across 6 ZIPs — #112 of 116 Missouri counties.

Standout ZIPs in this County


Most Populous
Edina · 2,194 people
57.8% of county total
Highest Income
Baring · $86,250 median
1.4× county average
Largest Land Area
Edina · 147.5 sq mi
Spans the most ground
Fastest Growth
Edina · 31.2% (10-yr)
1,672 → 2,194 residents
Most Educated
Edina · 16.9% bachelor's+
233 of 1,376 adults 25+

Things worth knowing about Knox County


3,793 residents live across 6 ZIPs covering 497 sq mi, served by 6 distinct USPS-recognized cities.

Population moved from 4,062 to 3,793 from 2014 to 2024 — a -6.6% change. 2 ZIPs gained residents, 4 lost.

The county's wealthiest ZIP 63531 (Baring, $86,250 median) and poorest ZIP 63547 (Hurdland, $38,281) are 11.2 miles apart — a 2.3× income gap across local geography.

Median home values vary 2.1× across this county — from $78,100 in 63547 (Hurdland) to $166,700 in 63531 (Baring).

Density varies across the county — from 2 people/sq mi in 63460 (Novelty) to 15 in 63537 (Edina).

Educational attainment ranges from 7.2% bachelor's+ in 63531 (Baring) to 20.6% in 63458 (Newark) — the breadth of educational profiles across the area.

Within Missouri, this is the #112 most populous of 116 counties and ranks #47 for median household income .

Weighted by population, the typical household earns about $61,121 across the county — reflecting what a typical resident sees, not a simple ZIP average.

15.6% of adults age 25+ hold a bachelor's degree or higher (387 of 2,484 reporting).

6 Standard delivery, 0 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about Knox County


Population decline

Knox County lost 6.6% of residents between 2014 and 2024. ZIPs that shed the largest share:

Hurdland
-45.8%
696 → 377 residents
Knox City
-32.7%
732 → 493 residents

All ZIP Codes in Knox County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
63537EdinaStandard2,194$59,891147.531.2%
63446Knox CityStandard493$60,982104.1-32.7%
63531BaringStandard393$86,25077.38.3%
63547HurdlandStandard377$38,28162.9-45.8%
63458NewarkStandard185$69,25023.4-19.2%
63460NoveltyStandard15182.4-59.2%

Adjacent & Nearby Counties